Heatable godet and a method of heating a godet

Abstract

The circumferential wall of the godet drum is heated via air which is heated by a heating device within the chamber of the drum. Air circulation through a closed path is aided by means of fan blades which are mounted on an interior face of the drum.

What is claimed is: 
     
       1. A method of heating a godet having a circumferential wall defining a hollow chamber, said method comprising the steps of circulating a gaseous medium in a substantially closed free flow path of U-shaped cross-section limited by an annular face side of the godet, said circumferential wall and an opposite annular face side of the hollow chamber to heat said circumferential wall;   passing the gaseous medium from said flow path circumferentially into and through guide ducts extending between said annular face sides and circumferentially therefrom into said flow path; and   heating the gaseous medium within said guide ducts by means of a heating means in order to transfer substantially the total amount of heat from the heating means to said wall by means of said gaseous medium.   
     
     
       2. A method as set forth in claim 1 wherein the heated medium circulated by rotation of the godet and is radially accelerated in at least one part of said closed path. 
     
     
       3. A method as set forth in claim 1 wherein the heated medium is circulated in said closed path by convection.